 Until 1978, I-90 was routed on the Congress Street Expressway (later named the Eisenhower Expressway) which was extended from the Loop to the intersection of the Northwest Tollway and IL 53.The Kennedy Expressway was signed only as I-94, and the portion of present-day I-90 between the Edens Expressway and IL 53 was not signed as an Interstate Highway.This provided a non-toll section of I-90 between downtown Chicago and IL 53.